Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.67 A.
 0.70 A.
 0.50 A.
 0.25 A.

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Measurement and Instrumentation
Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy.

 Both A and R are true and R is the correct explanation of A
 Both A and R are true but R is NOT the correct explanation of A
 A is true but R is false
 A is false bur R is true

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